<!DOCTYPE html>
<html>
<head lang="en">
	<meta charset="UTF-8">
<title>带关闭按钮的滚动广告</title>
<style type="text/css">
#main{ text-align:center;}
#float{
	position:absolute;
	left:30px;
	top:60px; 
	z-index:1;
	}
#close{
	position:absolute;
	top:60px;
	left:134px;
	z-index:2;
	cursor:hand;
}
</style>
</head>
<body>
<div id="close" onClick="adv_close()"><img src="images/close.jpg"></div>
<div id="float"><img src="images/advpic.jpg"></div>
<div id="main"><img src="images/contentpic.jpg"></div>
<script type="text/javascript">
	var floatTop;//层距页面顶端的距离
	var floatLeft;//左边的距离
	var floatObj;//层对象
	

      
	
	
	function inxi(){
		floatObj=document.getElementById("float");//获得层对象
		if(floatObj.currentStyle){
			floatTop=parseInt(floatObj.currentStyle.top);
			floatLeft=parseInt(floatObj.currentStyle.left);
			
		}else{
			floatTop=parseInt(document.defaultView.getComputedStyle(floatObj,null).top);
			floatLeft=parseInt(document.defaultView.getComputedStyle(floatObj,null).left);
			
			
			
			
		}
		
		function move(){
			
		var sTop=parseInt(document.documentElement.scrollTop||document.body.scrollTop);
		var sLeft=parseInt(document.documentElement.scrollTop||document.body.scrollTop);
	
		floatObj.style.top=floatTop+sTop+"px";
	
	floatObj.style.left=floatLeft+sLeft+"px";
		



		
		}
		
		
		 window.onload=inix;//页面加载调用函数
          window.onscroll=move;//滚动条滚动效果
          
        
          
      </script>
		

	
	
	
	
	
	


</body>
</html>
